VOASpecialEnglish（英文）PPT课件

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1、VOASpecialEnglishQuestions:1、Howdowaxprotectandcleantheear?A、Waxtrapsdirtandothermatterandkeepinsectsout.B、Waxmighthelpprotectagainstinfections.C、Waxcankeepearsfromgettingtoowet.D、BothAandB.2、Manymaterialscansoftenthewax，except___?A、CitricacidB、GlycerinC、Hy

2、drogenperoxideD、Carbamideperoxide3、WhichoneisINCORRECTofthefollowingstatement?A、Earwaxhasamedicalname:cerumenB、MostpeopleofEuropeanorEastAsianshavethe"wet"kind,Africanancestrycommonlyhave"dry"earwax.C、Extrawaxcanhardenandformablockagethatinterfereswithsound

3、wavesandreduceshearing.D、Irrigationisawayofremovingwax.ThisistheVOASpecialEnglishHealthReport.Somepeople'searsproducewaxlikebusylittlebees.Thiscanbeaproblemeventhoughearwaxappearstoserveanimportantpurpose.Itprotectsandcleanstheear.Ittrapsdirtandothermattera

4、nditkeepsinsectsout.Doctorsthinkearwaxmightalsohelpprotectagainstinfections.Andthewaxyoilkeepsearsfromgettingtoodry.Soearwaxisgood.Itevenhasamedicalname:cerumen.Andtherearetwokinds.MostpeopleofEuropeanorAfricanancestryhavethe"wet"kind:thickandsticky.EastAsi

5、anscommonlyhave"dry"earwax.Butyoucanhavetoomuchofagoodthing.Theglandsintheearcanalthatproducethewaxmaketoomuchinsomepeople.Earwaxisnormallyexpelled;itfallsoutoftheearorgetswashedaway.Butextrawaxcanhardenandformablockagethatinterfereswithsoundwavesandreduces

6、hearing.Peoplecanalsocauseablockagewhentheytrytocleanouttheirears,butonlypushthewaxdeeperinside.Earwaxremovalissometimesnecessary.Butyouhavetouseasafemethodoryoucoulddoalotofdamage.ExpertsattheNationalInstitutesofHealth,N.I.H.,suggestsomewaystotreatexcessiv

7、eearwaxyourself.Thewaxcanbesoftenedwithmineraloil,glycerinoreardrops.Hydrogenperoxideorcarbamideperoxidemayalsohelp.Anotherwaytoremovewaxisknownasirrigation.Withtheheadupright,takeholdoftheouterpartoftheear.Gentlypullupwardtostraightentheearcanal.Useasyring

8、edevicetogentlydirectwateragainstthewalloftheearcanal.Thenturntheheadtothesidetoletthewaterout.TheexpertsatN.I.H.sayyoumayhavetorepeatthisprocessafewtimes.Usewaterthatisbodytemperature.Ifthewateriscool